I milled 16 legs, 8 of each length, and one spare each. I marked them earlier in sets and face orientation, but now it gets real critical to pay attention for the other mortises.
I used the Jet benchtop mortiser for this—1/2 inch
-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"